ACSM data mut be unescaped before parsing

Add a copy constructor to Exception
Start an authentication when E_ADEPT_DISTRIBUTOR_AUTH error is received during fulfill
Don't download external libraries if it already exists

scripts/setup.sh

@@ -1,10 +1,14 @@
 #!/bin/bash
 
 # Pugixml
-git clone https://github.com/zeux/pugixml.git lib/pugixml
-pushd lib/pugixml
-git checkout latest
-popd
+if [ ! -d lib/pugixml ] ; then
+    git clone https://github.com/zeux/pugixml.git lib/pugixml
+    pushd lib/pugixml
+    git checkout latest
+    popd
+fi
 
 # Base64
-git clone https://gist.github.com/f0fd86b6c73063283afe550bc5d77594.git lib/base64
+if [ ! -d lib/base64 ] ; then
+    git clone https://gist.github.com/f0fd86b6c73063283afe550bc5d77594.git lib/base64
+fi